Matt Damon just shared that director Christopher Nolan had a pretty bold rule while filming The Odyssey: absolutely no ADR (that's when actors re-record their lines in a studio).
Damon said he had never re-recorded anything, which is rare in Hollywood.
Sound designer Willie D Burton backed this up, saying Nolan insisted all dialogue be captured live on set.
IMAX cameras recorded 'The Odyssey' audio
Recording clean audio on a ship wasn't easy, think tough weather and tricky setups, but Burton's team made it work with super-long cables and special IMAX cameras that were extra quiet.
All this effort was about keeping the sound as real as possible, just like Nolan wanted.
The Odyssey is out in theaters now if you want to hear the difference for yourself!